Colonisation of gut microbiomes during early life can shape metabolism and immunity of adult animals. However, most data are derived from antibiotic‐treated or germ‐free laboratory mammals. Furthermore, few studies have explored how microbial colonization during critical windows influences a suite of other fitness‐related traits in wild animals. A recent study in the Journal of Animal Ecologytested whether hatching constitutes a critical development window for microbiome … Continue reading Manipulation of gut microbiota during critical developmental windows affect host physiological performance and disease susceptibility across ontogeny